kernel.git/drivers/gpu/drm/msm/dp/dp_drm.c, branch linux-rolling-stable

drm/msm/dp: fix all kernel-doc warnings

2025-12-24T09:24:18Z

Correct and add kernel-doc comments to eliminate all warnings: Warning: ../drivers/gpu/drm/msm/dp/dp_debug.h:31 expecting prototype for msm_dp_debug_get(). Prototype was for msm_dp_debug_init() instead Warning: ../drivers/gpu/drm/msm/dp/dp_drm.c:24 function parameter 'connector' not described in 'msm_dp_bridge_detect' Warning: ../drivers/gpu/drm/msm/dp/dp_link.h:90 expecting prototype for mdss_dp_test_bit_depth_to_bpp(). Prototype was for msm_dp_link_bit_depth_to_bpp() instead Warning: ../drivers/gpu/drm/msm/dp/dp_link.h:126 function parameter 'aux' not described in 'msm_dp_link_get' Warning: ../drivers/gpu/drm/msm/dp/dp_link.h:126 function parameter 'dev' not described in 'msm_dp_link_get' Warning: ../drivers/gpu/drm/msm/dp/dp_panel.h:70 function parameter 'bw_code' not described in 'is_link_rate_valid' Warning: ../drivers/gpu/drm/msm/dp/dp_panel.h:84 expecting prototype for msm_dp_link_is_lane_count_valid(). Prototype was for is_lane_count_valid() instead Signed-off-by: Randy Dunlap Reviewed-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/695647/ Link: https://lore.kernel.org/r/20251219184638.1813181-3-rdunlap@infradead.org Signed-off-by: Dmitry Baryshkov

drm/bridge: Pass down connector to drm bridge detect hook

2025-07-14T15:23:18Z

In some application scenarios, we hope to get the corresponding connector when the bridge's detect hook is invoked. In most cases, we can get the connector by drm_atomic_get_connector_for_encoder if the encoder attached to the bridge is enabled, however there will still be some scenarios where the detect hook of the bridge is called but the corresponding encoder has not been enabled yet. For instance, this occurs when the device is hot plug in for the first time. Since the call to bridge's detect is initiated by the connector, passing down the corresponding connector directly will make things simpler. Signed-off-by: Andy Yan Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250703125027.311109-3-andyshrk@163.com [DB: added the chunk to the cdn-dp driver] Signed-off-by: Dmitry Baryshkov

drm/msm/dp: reuse generic HDMI codec implementation

2025-05-02T00:54:03Z

The MSM DisplayPort driver implements several HDMI codec functions in the driver, e.g. it manually manages HDMI codec device registration, returning ELD and plugged_cb support. In order to reduce code duplication reuse drm_hdmi_audio_* helpers and drm_bridge_connector integration. Signed-off-by: Dmitry Baryshkov Signed-off-by: Dmitry Baryshkov Reviewed-by: Abhinav Kumar Patchwork: https://patchwork.freedesktop.org/patch/649728/ Link: https://lore.kernel.org/r/20250423-dp-hdmi-audio-v7-1-8407a23e55b2@oss.qualcomm.com

drm/msm/dp: convert to devm_drm_bridge_alloc() API

2025-04-29T09:21:24Z

This is the new API for allocating DRM bridges. Reviewed-by: Dmitry Baryshkov Signed-off-by: Luca Ceresoli Link: https://patchwork.freedesktop.org/patch/msgid/20250424-drm-bridge-convert-to-alloc-api-v2-16-8f91a404d86b@bootlin.com Signed-off-by: Louis Chauvet

drm/msm: Use str_enable_disable-like helpers

2025-02-25T18:07:44Z

Replace ternary (condition ? "enable" : "disable") syntax with helpers from string_choices.h because: 1. Simple function call with one argument is easier to read. Ternary operator has three arguments and with wrapping might lead to quite long code. 2. Is slightly shorter thus also easier to read. 3. It brings uniformity in the text - same string. 4. Allows deduping by the linker, which results in a smaller binary file. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Abhinav Kumar Patchwork: https://patchwork.freedesktop.org/patch/632406/ Link: https://lore.kernel.org/r/20250114191724.861601-1-krzysztof.kozlowski@linaro.org Signed-off-by: Dmitry Baryshkov

Merge tag 'v6.14-rc4' into drm-next

2025-02-25T07:36:09Z

Backmerge Linux 6.14-rc4 at the request of tzimmermann so misc-next can base on rc4. Signed-off-by: Dave Airlie

drm/bridge: Pass full state to atomic_post_disable

2025-02-19T15:59:13Z

It's pretty inconvenient to access the full atomic state from drm_bridges, so let's change the atomic_post_disable hook prototype to pass it directly. Reviewed-by: Dmitry Baryshkov Reviewed-by: Douglas Anderson Tested-by: Douglas Anderson Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-5-e71598f49c8f@kernel.org Signed-off-by: Maxime Ripard

drm/bridge: Pass full state to atomic_disable

2025-02-19T15:59:12Z

It's pretty inconvenient to access the full atomic state from drm_bridges, so let's change the atomic_disable hook prototype to pass it directly. Reviewed-by: Dmitry Baryshkov Reviewed-by: Douglas Anderson Tested-by: Douglas Anderson Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-4-e71598f49c8f@kernel.org Signed-off-by: Maxime Ripard

drm/bridge: Pass full state to atomic_enable

2025-02-19T15:59:12Z

It's pretty inconvenient to access the full atomic state from drm_bridges, so let's change the atomic_enable hook prototype to pass it directly. Reviewed-by: Dmitry Baryshkov Reviewed-by: Douglas Anderson Tested-by: Douglas Anderson Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-3-e71598f49c8f@kernel.org Signed-off-by: Maxime Ripard

drm/msm/dp: account for widebus and yuv420 during mode validation

2025-02-15T19:46:42Z

Widebus allows the DP controller to operate in 2 pixel per clock mode. The mode validation logic validates the mode->clock against the max DP pixel clock. However the max DP pixel clock limit assumes widebus is already enabled. Adjust the mode validation logic to only compare the adjusted pixel clock which accounts for widebus against the max DP pixel clock. Also fix the mode validation logic for YUV420 modes as in that case as well, only half the pixel clock is needed. Cc: stable@vger.kernel.org Fixes: 757a2f36ab09 ("drm/msm/dp: enable widebus feature for display port") Fixes: 6db6e5606576 ("drm/msm/dp: change clock related programming for YUV420 over DP") Reviewed-by: Dmitry Baryshkov Tested-by: Dale Whinham Patchwork: https://patchwork.freedesktop.org/patch/635789/ Link: https://lore.kernel.org/r/20250206-dp-widebus-fix-v2-1-cb89a0313286@quicinc.com Signed-off-by: Abhinav Kumar